What is diskarbitrationd on Mac?
By Junaid, maker of Taskglass · Last reviewed
Notices disks being connected and decides how and where they are mounted.
diskarbitrationd tells apps when disks and volumes appear or disappear and manages mounting them, for example when you plug in a USB drive or open a disk image. It's essential and normally idle.
- Category
- macOS system
- Made by
- Apple
- Safe to quit:
- No
Shown in Activity Monitor as diskarbitrationd
Why is diskarbitrationd using so much CPU or memory?
- Connecting drives or opening disk images
- A drive or cable that keeps disconnecting and reconnecting
- A damaged disk being checked
What to do
- 1Eject external drives you aren't using
- 2Try a different cable or port for a drive that keeps dropping
- 3Run First Aid in Disk Utility on the affected disk
- 4Restart your Mac
Safe to quit? No.
Don't quit it: mounting and ejecting disks depend on it.
Related processes
Part of the Taskglass Process Library